M62430 internal block diagram

M62430 is the latest SRS digital surround sound processing chip developed and produced by Mitsubishi Corporation of Japan. It has a built-in sound recovery
system, that is, SRS complies with the SRS standard.
    The M62430 has a dual-channel electronic volume and tone control circuit inside. Its volume control
can be adjusted simultaneously in two channels or independently. The volume control uses a ladder resistor network with a step size of 1dBo, which can reduce noise and distortion.
Its tone control range is ±10dB, with a step size of 2dBo.
    The main features of M62430 are:
    (1) Electronic volume control: OdB～79dBo
    (2) Tone control: Bass/midrange tone: OdB～±10dB, bass enhancement +10dB ( Can be switched on or off) o
    (3) Space/center volume control : OdB ~ one. . dBo
    (4) has four outputs including main channel and recording channel.
    (5) It has a microcomputer control interface and uses 16-bit serial data to control all functions.
    M62430 is a large-scale integrated circuit using an 80-pin flat package. Its system block diagram is shown in the figure.

The internal block diagram and pin diagram are shown in the figure.